Decommissioning Consultant

Mission Overview: Keystone Solutions is seeking a skilled consultant for a critical mission at a client site focused on digital transformation. The project involves transitioning a legacy ADABAS/Natural database environment from BS2000 to a new Linux platform while ensuring existing operations remain uninterrupted. As a consultant, you will be representing Keystone Solutions and will be engaged in building technical modules for data extraction and transformation, as well as establishing a replication mechanism to ensure parallel functionality between the BS2000 and Linux environments.

Key Responsibilities
• Analyze existing legacy processes and interpret data objects accurately.
• Develop technical modules that facilitate data extraction, transformation, replication, and validation towards the Linux platform.
• Work on mechanisms to ensure the BS2000 and Linux environments function in parallel without altering existing feeding processes initially.
• Conduct testing and validation, including technical test scenarios, source and target data comparisons, reconciliation checks, and documentation of test results and corrective actions.

Requirements:
• Strong knowledge of the BS2000 mainframe environment, particularly Natural and ADABAS.
• Ability to analyze and understand poorly documented legacy applications.
• Proficiency in documenting analyses, developed modules, mappings, test results, and technical decisions clearly and structured.
• Proactive approach to identifying missing information, signaling risks, and proposing solutions.
• Capability to prioritize tasks within a complex environment with multiple databases and technical dependencies.
• Test-oriented mindset to ensure data is transferred correctly, completely, timely, and reliably. Why Join Keystone Solutions: As a consultant at Keystone Solutions, you will

experience:
• Consultancy Nature: Engage in on-site work and embody the consultant identity.
• Dynamic Projects: Tackle diverse challenges across various client environments.
• Turbo-Charged Learning: Benefit from professional development and broad learning experiences.
• Skyrocketing Ambition: Enjoy a commitment to career growth within our framework.
• Values: As a 'K-Stone', you will bring our core values to every engagement. If you are ready to tackle technical and strategic challenges in a dynamic consultancy environment, apply today at Keystone Solutions Career Portal. Duration: 15/09/2026
- 31/12/2026 4 months
• (full time) Skills required:
• ADABAS for Mainframe BS2000 version 8.2.
- Level: Confirmed
- Most recent: Any time
• BS2000 : SDF, JCL, EDT, LMS
- Level: Confirmed
- Most recent: Any time
• Data reconcilliatie
- Level: Junior
- Most recent: Any time
• Data replicatie, Data transformatie
- Level: Junior
- Most recent: Any time
• Natural for Mainframes BS2000 version 8.2.7 (ou plus haut)
- Level: Confirmed
- Most recent: Any time
• Office 365
- Level: Confirmed
- Most recent: Any time Language

requirements:
Dutch Level Active knowledge English Level Active knowledge French Level Active knowledge